If wet braking matters most
Graded A for wet grip, and nothing else that fits is graded higher. Graded C for rolling resistance. EPREL registration 1211481.

The MG MG4 runs one fitment, 215/50 R17 95V XL. XL is not optional here; it is what the car was type approved on. The MG MG5 EV takes the same size.
| Generation | Trim | Wheel | Tyre size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| 2022 onwards | SE | 17in | 215/50 R17 | 95 | V | XL | none | 36 psi |
Your own placard is the authority. You will find it on the driver's door jamb. Where it disagrees with this page, it wins. Match or exceed the size, load index, speed rating and construction class it gives, and use its pressure figure rather than anything printed on the tyre.
215/50 R17 is the most competitively supplied EV size in Britain, which is the main reason an MG4 is cheaper to re-shoe than almost anything else with a battery in it.
The Long Range Trophy runs a larger 18 inch fitment. We have not yet sourced its load index and speed rating to the standard this site publishes at, so it is deliberately absent from the table below rather than guessed at.
The MG4 is not sold in the United States, so this page has no American counterpart and declares no hreflang pair.
The 17 inch car runs 215/50 R17 95V, and 95 is the XL index for that size: a standard-load tyre in 215/50 R17 tops out at 91. So the XL is not an option here, it is the only way to reach the load index the car was approved on.
How these were chosen. Everything here already clears this vehicle's own load index, speed rating and construction class. Each heading is a question about use rather than a ranking. The whole method.
Graded A for wet grip, and nothing else that fits is graded higher. Graded C for rolling resistance. EPREL registration 1211481.
Graded A for rolling resistance, the best of anything here, and that is the figure that shows on the range display. Graded B for wet grip. EPREL registration 914991.
Graded A for fuel efficiency in several of the sizes heavy electric cars use, which is a harder result on a two tonne car than it looks.
A touring summer tyre built with Bridgestone's Enliten construction, which cuts weight and rolling resistance across the range rather than in one model.
An efficiency-first summer tyre aimed squarely at range rather than at cornering.
Including the manufacturer's own published figure. Neither source is standing next to your vehicle, which is why the placard still wins.